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I'm using rcontrib to calculate sunlight hours for a grid of test points. Each sun position is created as a light source modifier and then I use rcontrib -M modifiers.sun [options] *.oct < *.pts > *.dc to calculate the daylight coefficient. I tried to use rigorous radiance options such as -ab 0 -aa 0 -ad 65536 -lw 1.52e-5 -dt 0 -dc 1.0 but radiance is still missing ~3% of suns in the scene. I also tried turning on and off -u.

This image shows one of the cases. Black spheres show the place with inaccurate values. I draw sun vectors from one of the test points and in this case Radiance is missing the vector which is parallel to the wall.

You can read more here.

I'm using rcontrib to calculate sunlight hours for a grid of test points. Each sun position is created as a light source modifier and then I use rcontrib -M modifiers.sun [options] *.oct < *.pts > *.dc to calculate the daylight coefficient. I tried to use rigorous radiance options such as -ab 0 -aa 0 -ad 65536 -lw 1.52e-5 -dt 0 -dc 1.01 but radiance is still missing ~3% of suns in the scene. I also tried turning on and off -u.

This image shows one of the cases. Black spheres show the place with inaccurate values. I draw sun vectors from one of the test points and in this case Radiance is missing the vector which is parallel to the wall.

You can read more here.

I'm using rcontrib to calculate sunlight hours for a grid of test points. Each sun position is created as a light source modifier and then I use rcontrib -M modifiers.sun [options] *.oct < *.pts > *.dc to calculate the daylight coefficient. I tried to use rigorous radiance options such as -ab 0 -aa 0 -ad 65536 -lw 1.52e-5 -dt 0 -dc 1 but radiance is still missing ~3% of suns in the scene. I also tried turning on and off -u.

This image shows one of the cases. Black spheres show the place with inaccurate values. I draw sun vectors from one of the test points and in this case Radiance is missing the vector which is parallel to the wall.

You can read more here.

I'm using rcontrib to calculate sunlight hours for a grid of test points. Each sun position is created as a light source modifier and then I use rcontrib -M modifiers.sun [options] *.oct < *.pts > *.dc to calculate the daylight coefficient. I tried to use rigorous radiance options such as -ab 0 -aa 0 -ad 65536 -lw 1.52e-5 -dt 0 -dc 1 but radiance is still missing ~3% of suns in the scene. I also tried turning on and off -u.

This image shows one of the cases. Black spheres show the place with inaccurate values. I draw sun vectors from one of the test points and in this case Radiance is missing the vector which is parallel to the wall.

You can read more here.

I'm using rcontrib to calculate sunlight hours for a grid of test points. Each sun position is created as a light source modifier and then I use rcontrib -M modifiers.sun [options] *.oct < *.pts > *.dc to calculate the daylight coefficient. I tried to use rigorous radiance options such as -ab 0 -aa 0 -ad 65536 -lw 1.52e-5 -dt 0 -dc 1 but radiance is still missing ~3% of suns in the scene. I also tried turning on and off -u.

This image shows one of the cases. Black spheres show the place with inaccurate values. I draw sun vectors from one of the test points and in this case Radiance is missing the vector which is parallel to the wall.

You can read more here.